The suit is insulated with wool and flannel, and boasts a pair of built-in slippers to keep [Nevil] Maskelyne’s toes nice and warm. Ample cushioning around the seat of the trousers would have kept his rump a little more comfortable during long nights in his observing chair. “This suit reminds us of how physical and demanding astronomy was in the 18th century,” says Louise Devoy, senior curator of the Royal Observatory Greenwich, where the suit is currently in storage at the Prince Phillip Maritime Collection Centre.